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Finding the Fourth Proportional to 40,230.40, 60,394.20 and 39,938.80

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Solution

The fourth proportional to 40,230.40, 60,394.20 and 39,938.80 is: 59,956.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,230.40 : 60,394.20 = 39,938.80 : x
  2. Step 2: Convert to fraction form
    40,230.40/60,394.20 = 39,938.80/x
  3. Step 3: Cross multiply
    40,230.40x = 60,394.20 × 39,938.80
  4. Step 4: Simplify right side
    40,230.40x = 2,412,071,874.96
  5. Step 5: Solve for x
    x = 2,412,071,874.96/40,230.40
  6. Step 6: Final answer
    x = 59,956.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.